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首页> 外文期刊>Advanced Functional Materials >Rapid Near-Infrared Light Responsive Shape Memory Polymer Hybrids and Novel Chiral Actuators Based on Photothermal W_(18)O_(49) Nanowires
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Rapid Near-Infrared Light Responsive Shape Memory Polymer Hybrids and Novel Chiral Actuators Based on Photothermal W_(18)O_(49) Nanowires

机译：基于光热W_（18）O_（49）纳米线的快速近红外光响应形状记忆聚合物杂化物和新型手性致动器

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摘要

Photoresponsive actuators are built by introducing oligo(ethylene glycol) (OEG)-modified W18O49 nanowires into cross-linked polyethylene glycol diacrylate (cPEGDA) polymer matrices. Due to the good compatibility, OEG-W18O49 NWs disperse well and increase the crystallinity of cPEGDA matrices even in high loading concentrations (4.0 wt%). The cPEGDA/W18O49 nanocomposites show efficient photothermal transition and rapid shape memory behaviors. They can raise the local temperature to 160 degrees C in only 8.5 s and recover the initial shape within 10 s. Making use of the broad and strong absorption property of W18O49, the cPEGDA/W18O49 NW actuators respond to both ultraviolet and near-infrared light and make contraction and bending motions. Furthermore, by utilizing oriented chain segments of the crystalline polymer and vector sum of shape recovery forces, the cPEGDA/W18O49 NW hybrid actuators exhibit stable helical deformation (right-handed and left-handed).
机译：通过将经寡聚乙二醇（OEG）修饰的W18O49纳米线引入交联的聚乙二醇二丙烯酸酯（cPEGDA）聚合物基体中，可以构建光敏致动器。由于良好的相容性，即使在高负载浓度（4.0 wt％）下，OEG-W18O49 NWs仍能很好地分散并提高cPEGDA基质的结晶度。 cPEGDA / W18O49纳米复合材料显示出有效的光热转变和快速的形状记忆行为。他们可以在仅8.5 s的时间内将局部温度升高到160摄氏度，并在10 s内恢复初始形状。利用W18O49广泛而强大的吸收特性，cPEGDA / W18O49 NW执行器可以响应紫外线和近红外光，并进行收缩和弯曲运动。此外，通过利用结晶聚合物的定向链段和形状恢复力的矢量和，cPEGDA / W18O49 NW混合执行器显示出稳定的螺旋形变形（右旋和左旋）。

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  • 来源
    《Advanced Functional Materials》 |2019年第33期|1901202.1-1901202.8|共8页
  • 作者

    Zhou Yue; Tan Junyan; Chong Dandan; Wan Xinhua; Zhang Jie;

  • 作者单位

    Peking Univ, Coll Chem & Mol Engn, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China;

    Peking Univ, Coll Chem & Mol Engn, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China;

    Peking Univ, Coll Chem & Mol Engn, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China;

    Peking Univ, Coll Chem & Mol Engn, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China;

    Peking Univ, Coll Chem & Mol Engn, Minist Educ,Ctr Soft Matter Sci & Engn, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    hybrids; photoresponsive actuators; shape memory polymers; W18O49 nanowires;

    机译：混合动力车;光响应致动器;形状记忆聚合物;W18O49纳米线;

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